a varies jointly as b and the square of c
If b = 0.1, c = 0.6, then a = 360,
k =
If b = 0.2, c = 0.8, then a =
The time required to process a shipment of goods at Wal-Mart varies directly with the number of items and inversely with the number of workers assigned. If 15,000 items can be processed by 8 workers in 3600 minutes, then how long would it take 12 workers to process 20,000 items?